/Engine/Plugins/Developer/Concert/ConcertMain/Source/Concert/Public/IConcertSessionHandler.h
Implementation of a session custom event handler that uses a raw member function pointer with the correct event type in the handler function signature.
template<typename EventType, typename HandlerType> class TConcertRawSessionCustomEventHandler : public [FConcertSessionCustomEventHandlerBase](API\Plugins\Concert\FConcertSessionCustomEventHandle-)